Radiator core



Jan. 31, 1928.

J. M. FEDDERS RADIATOR CORE Filed July 6. 1926 2 Sheets-Sheet 1 UGW'FOI" 791 A 914414004 y QM, 174

Jan. 31, 1928.

1,657,463 J. M. FEDDERS I RADIATOR CORE Filed July 6. 1926 2 Sheets-Sneet 2 Ill) Pat

JOHN M. FEDDERES, OF BUFFALO,

IEilV YORK, ASFJ'IGNOE I EDDEFLS 4G CUM'EAIWL IITQ, UTE BUF 110, NEW] "55013 11, .61 GOBPORATIQN OE MANUFACTUR- NEW YORK.

RADIATQB CORE.

Application filed Juy 6,

in connection with vide a core for such radiators which will yield a greater radiating efficiency for a given amount of metal, which be manufactured expeditiously and economically and which is strong and d bio and not l kely to get out of order when subjected to the vibrations of the car on which the same is mounted.

in the accompanying drawingsz- Figure 1. is a fragmentary front elevation of a radiator core embodying one form of my invention.

Figure eorrespondiagly a vertical section talten on the numbered line in Figure 4.

Figure 3 is a top plan view of a portion of the radiator core containing; my improvements, as shown in Figs. 1 and 2.

Figure l is a horizontal section. taken on line lfl Fig. 2.

Figures 5 and 6 are perspective views of one section of a radiator unit made in cordance with the construction shown in Figs. 1 to d. i

Figure 7 is a tragnientary front elevation at a radiator core containing my invention but slightly modified as con'ipared with the construction shown in Figs. 1 to 6.

tiimilar characters of reference indicate lilce parts in the several figures ot the drawinns;

In its general organization, this radiator core as shown in Figs. 1 to 6 comprises a plurality of water pas s instant case are arranged vertically,and a plurality of air tubes ll, 12 which are arranged between said water passages.

Each of the water passages 10 is formed hat-ween the opposi sides of two sheet metal strips so thatthis passage is arranged vertically. Each of these sheet metal strips nreiterably made of very thin copper. or similar metal site and provided at its oppoical edges with laterally oil-set hanges 13; ot a companion 10 which in the a head, the opposite ends which are adapted to engage with.

1926. serial No. 120,608.

strip, while the intermediate part or body of his strip recedes and terms an upright wall it which is spaced apart from the coinpanion wall 14: of an adjacent metal strip and forms with the same an upright water passage conduit, or pipe, which is flattened and extends with its length tore-andatt ot the rad ator core.

The oft-set flanges 18, 13 at opposite longitudinal edges ot' the two cooperating strips of metal are securely connected with each other by soldering; or otherwise to form. a lealt-ti 'ht joint between the same for preventing the escape of water from the core.

At intervals, each of the sheet metal strips is provided with laterally projecting; loops which are so constructed that the metal of the same is integrally connected with the walls of the water passages, and form a plurality of air tubes between adjacent water p ages, whereby the heat which is conducted :lrom the walls of the water passages to these air tubes is absorbed by the air passing through the same, and thereby operates to reduce the temperature of the water which passing through the water passages. lthough these air tubes may be of various terms in cross section the same are preterably ot' hexagonal iormas shown in Figs. 1 and 2.

Each of these laterally projecting loopsof a metal strip is bent to term one complete air tube 11 ot' hexagonal form which has two of its opposing; flat sides arrangedv horizontally at the top and bottom of each tube thereof. (in that longitudinal side of each air tube 11. next to the companion wall 14 and flanges 13 ot the respective air tube, the loop torming a complete airtube 11 is connected by means of two webs 1515, with the wall 1% and flanges 13 0t the-respective metal strip so as to be connected integrally therewith, as shown in Figs. 1 and 2. On the opposite longitudinal side of each complete air tube 11. the same is provided with V of which are .pro- 'vided with laterally projecting lugs 16 which engage with the oil -set flanges 13 on the opposing wall of an adjacent water tube; while the intermediate edge portion of this head is provided with a longitudinal recess 17 which receivesthe laterall bulging receding wall 14; et this last Mi l In the assembled position of a plurality of units of this character, the air tubes of one strip are intercalated with the air tubes of an opposing strip of an adjacent water tube and the air tubes of these two strips engage each other at their upper and lower flat sides or facets; and the longitudinal head of each of these strips engages with the wall and off-set flanges of the other strip.

The oint between the webs l.515 of each loop is closed by solder so as to form a leaktight joint there-between, and the beads of the air titbes on one strip are connected with the wall of an opposing strip, and the several air tubes of two adjacent units are con-- nected with each other by solder, thereby securely connecting the several parts of the radiator core and not only preventing the same from leaking, but also forming a very rigid structure which is not likely to give way and cause leakage wider severe strains.

lVhen two units are thus assembled, the complete air tubes 11 are arranged in a vertical row and these in connection with the opposing walls of two adjacent strips, form two vertical rows of half tubes 12, adjacent to the outer sides of the water tube walls. lVhen, however, a plurality of such units are assembled, the half air tubes on opposite sides of each water tube present the appearance of complete air tubes, so that a radiator core when viewed from the front, as shown in Fig. 1, presents a honey-comb appearance in which each of the cells is of hexagonal form.

In order to preserve the hexagonal appearance of the several cells of the radiator core and still permit cross circulation of air between the several airtubes for promoting the cooling effect" of the same, each of the air tubes only engages the opposite ends of its upper and lower sides with the corresponding parts of adjacent air tubes, as shown at 18, but the intermediate parts 19 of the upper and lower sides of the air tubes are recessed or offset inwardly relative to the end portions thereof, as shown in Figs. 2, 3, t and 5, whereby horizontal transverse air conduits are formed between adjacent air tubes of both strips, which provide a free circulation of the air cross-wise through the radiator core, and thus aid in equalizing the cooling; effect and obtaining the maximum efiioiency of the core,

If desired, the loops which project laterally from each sheet metal strip at intervals in. its length, may be so constructed that they produce more than one vertical row of air tubes in cooperation with similar loops formed on the opposing strip of an adjacent water passage wall. For example, as shown in Fig. 7, the loops on the opposing metal strips of their adjacent water tubes are so constructed that they produce three vertical tiers or columns of complete air tubes 20, 21,

21, each of these tubes being of hexagoiuil form in moss-section. In this constrlgurtion, each of the sheet metal strips has its water passage wall 22 and the oli-sct flanges "i l at opposite ends thereof made of zig-zug form,

sothat the facets of this strip form some oil. the facets of the air tubes.

In the preferred constriurtirm, alternate summits of each o l those sheet metal strips are provided with loops and heads which project laterally there'l'rtuu. l luch loop has its extremity shaped to form a couuilcte air tube 20, one longitudinal side of which is connected by integral wel lwith the adjacent summit of the. wall 1.3 and flanges fi l of the respective strip, so that this loop in clfect is a continuation of the strip: and each of the heads is composed ol two plies ill the outer edges of which are connected with each other while the inner edges are connected respectively with the sections of the sheet metal strip on opposite sides of its summit.

In the assembled position of two :uljuccut strips having such alternate loops and heads, the upper and lower facets of the complete tubes E20 engage with each other. and the longitudinal side of each coni 'llele tube it) engages with the outer edge of the head on the opposingstrip, so as to form two tiers of coi'nplcte built-up air tubes ill. on opposite sides of the center row ol iutcural air tubes 90, each of these built-up air tubes being, made up by two facets of our of the strips, the adjacent web and head associated with the respective facets of the strip, one of the inner facets of the complete air tube fill on the respective strip, and one of the outer facets of the complete tube formed on an opposing strip of an adjacent water passage.

hen a plurality of such strips are as sembled, as shown in Fig. 7. the some are united with each other at their front and rear edges by means of solder as to close the joints between the pairs of strips forming water tubes, also the webs which connect the complete air tubes with the walls and flanges of the strips and also the connection between the several air tubes with each other and with the heads on the walls and flanges, so as to form a rigid structure, the several parts of which will not: become displaced under severe usage.

Both forum of my invention herein dcscribed and shown in the drawings. provide the maximum radiating surface for the amount of metal which used in the con struction of the core. The some also per mits of a very effective flow of air through the radiator core for carryinu away the heat of the water by convection, and the same is also of such a construction that the strips can be readily formed economically and expeditiously by machinery and assembled Elli lllli walls intermediate of with each other for producing complete ra diator cores without involving undue cost.

I claim as my invention:

1. A radiator core having a plurality of water passages and a plurality of air tubes arranged between said water passages, each of said water passages having opposing walls formed by two strips of sheet metal which have their opposite longitudinal edges engaging one another and their walls intermediate of said edges spaced from each other, and each of said strips being provided at intervals with laterally projecting loops forming air tubes, and the air tubes of one of said strips being arranged in the space between similar air tubes of an adjacent strip.

2. A radiator core comprising a plurality of water passages and a plurality of air passages arranged between the water passages, each of said water passages being formed between two sheet metal strips provided with ofii-set flanges at their longitudinal edges which engage each other while their said edges are spaced apart, and each of said strips being provided at intervals with laterally projecting loops forming air tubes, each tube being integrally connected by webs on one of its longitudinal sides with one strip and provided on its opposite longitudinal side with a head, the ends of each head being provided with lugs, and the intermediate part thereof being provided with a recess, said lugs and recess engaging with the offset flanges and the wall of an adjacent strip.

A radiator core comprising a plurality of water passages and a plurality of air passages arranged between the water passages, each of said water passages being formed between two sheet metal strips provided with oil-set flanges at their longitudinal edges which engage each other while their walls intermediate of said edges are spaced apart, and each of said strips being provided at intervals with laterally projecting loops forming air tubes, the tubes of each strip being complete and arranged between similar tubes of an adjacent strip and forming therewith partial air tubes which alternate with the complete tubes.

A radiator core comprising a plurality of water passages and a plurality of air passages arranged between the water passages, each of said water passages being formed between two sheet metal strips provided with offset flanges at their longitudinal edges which engage each other while their walls intermediate of said edges are spaced apart, and each of said strips being i vided at intervals with laterally projecting loops forming air tubes, and the air tubes of one strip being arranged between the air tubes of an adjacent strip, and the air tubes of one strip having its end portion engaging with the corresponding end portube of an adjacent strip,

tions of an an while the intermediate parts of said all tubes are spaced apart to form transverse air passages therebetween.

In testimony whereof I, hereby aifix my signature.

JOHN M. FEDDERS. 

